Ok...at this point in time, I have a friend who is 100% clean and willing to donate me her urine. However, she is a little nervous about giving me a sample because she is afraid somehow it will get traced back to her (she just took a UA in June for a similiar position). I told her I didn't think that (tracing urine to a person) was possible but there are much more knowledgable people on here then me so I wanted to throw it out there as neurotic as it sounds. Can that actually happen? Is it safe to sub with someone else's urine who had a UA like a month ago? Don't make fun of this post too much